How to deal with waste pulp integrated wastewater?

In the process of using waste paper to produce recycled paper, part of the wastewater is generated, the construction unit in the project plan proposed to be treated separately according to the situation, for the wastewater containing a higher concentration of paper fiber, the construction unit will try to recycle, and the paper fiber, recycled paper production can generally be recycled 30%, which can not only reduce the discharge of pollutants, but also increase the economic benefits of the enterprise; For wastewater that cannot be recycled, the construction unit will also carry out purification treatment and discharge it only after it meets the corresponding discharge standards.

For this type of discharged wastewater, "deep purification and reuse of reclaimed water" is required to minimize the total amount of pollutants discharged to reduce the pollution caused to the environment. For enterprises and environmental protection departments to choose.

Wastewater discharged from the pulp preparation workshop, wastewater discharged from the cardboard workshop, clean and hygienic sewage discharged from the workshop, wet dust removal device, etc. Due to the complex channels of waste paper**, the quality of wastewater often changes. It is precisely because of the above characteristics of papermaking wastewater that its treatment methods are also diverse.

The practice at home and abroad has proved that physicochemical treatment and biochemical treatment are the main technologies in the treatment process of recycled papermaking wastewater.

The odor emitted by papermaking is generally hydrogen sulfide, ammonia and ethyl mercaptan and other gases, and sewage contains harmful chemical inorganic substances, volatile phenols, precipitated fixatives, suspended solids, lignin and other organic substances. It can pollute the environment and increase the number of inhalable particles in the atmosphere, which can cause diseases if inhaled into the mouth, so it is necessary to use pulp deodorant as soon as possible to treat the odor of sewage.

It can be solved by using deodorant, which contains a variety of organic matter and bacteriostatic substances, which can effectively inhibit the survival and reproduction of spoilage bacteria.

Treatment technology: SN ozone catalytic oxidation coupling reaction technology can completely solve the SS and COD in wastewater, and easily reduce it to the wastewater treatment standard. The SAO3-II high-efficiency water treatment catalyst technology is used to greatly improve the degradation speed and efficiency of residual organic matter in wastewater through enrichment-catalytic activation-oxidative degradation, and combine the strong oxidation of [OH·] with the enrichment and catalytic activity characteristics of the catalyst, so as to more effectively solve a series of problems such as low efficiency and high operating cost of catalytic oxidation treatment.

Summary. Hello dear, the waste paper pulp treatment scheme is as follows1In the process of pulping, pulping is the first step of papermaking, and there are generally three methods for converting wood into pulp, including mechanical pulping, chemical pulping and semi-chemical pulping.

However, with the scarcity of forest resources, waste paper deinking pulp is generally used now, and waste paper deinking pulping mainly reduces production costs and environmental pollution. 2.The preparation process of papermaking pulp, the premise of papermaking in the preparation of pulp, generally from the pulp workshop after pulping, refining to achieve a certain degree of deduction to ensure the normal operation of the papermaking section.

The finished pulp should also go through slag removal, screening, washing and other sections to remove the light and heavy impurities contained in the slurry, and the screened pulp is batched in the pulping pool, and the quality of the paper and the batching of the slurry have an important relationship. Then dilute the prepared pulp to a certain concentration to ensure that the paper is copied normally. The common modulation process can be roughly divided into the following three steps:

a.Loose slurry bPulp c

Gluing and filling. 3.In the process of copying, the main work of the papermaking department is to make the thin paper stock evenly interwoven and dehydrated, and then dry, calender, roll the paper, cut, select and package.

Hello dear, the waste paper pulp treatment program is as follows1In the process of pulping, pulping is the first step of papermaking, and there are generally three methods for converting wood into pulp, including mechanical pulping, chemical pulping and semi-filial piety. However, with the scarcity of forest resources, waste paper deinking pulp is generally used now, and waste paper deinking pulping mainly reduces production costs and environmental pollution.

2.The preparation process of papermaking pulp, the premise of papermaking in the preparation of pulp, the rough pulp from the pulping workshop is generally beaten, and the refining reaches a certain degree of deduction to ensure the normal operation of the papermaking section. The finished pulp should also go through slag removal, screening, washing and other sections to remove the light and heavy impurities contained in the slurry, and the screened pulp is batched in the pulping pool, and the quality of the paper and the batching of the slurry have an important relationship.

Then dilute the prepared pulp to a certain concentration to ensure that the paper is copied normally. The common modulation process can be roughly divided into the following three steps: a

Loose slurry bPulp cGluing and filling.

3.In the process of copying, the main work of the papermaking department is to make the thin paper stock evenly interwoven and dehydrated, and then dry, calender, roll the paper, cut, select and package.

How to write a pulp treatment plan for waste books?

1. Proposal of the solution A series of program implementation concepts for the disposal of waste shirts and old books, the analysis of the implementation plan and operation process of the implementation plan put forward some treatment methods that can be used as a reference for schools, students, parents and other parties. Nowadays, with the improvement of the level of people's lives, many people are less and less concerned about waste products, thinking that it is not worth a few dollars.

Summary. The dry pulp beaten by waste paper can usually be disposed of in the following ways:1

**Utilization: After mixing, decomposing, washing, bleaching and other treatments, the dry pulp can be made into new paper or cardboard again to realize the best utilization of resources. 2.

Compression: The dry pulp is compressed into combustibles and then sent to an incineration plant for energy**. 3.

Composting: Dry pulp and other organic wastes are piled up, and after a period of fermentation, they can be made into organic fertilizer for planting flowers and plants. 4.

Other reuses: While dry pulp is not as good as food packaging paper, it can be used as other types of paper, such as architectural models, handmade cards, and other materials. We can treat it according to the specific situation and choose a suitable solution to deal with the dry pulp of waste paper.

The dry pulp beaten by waste paper can usually be disposed of in the following ways:1**Utilization:

After mixing, decomposing, washing, bleaching and other treatments, the dry pulp can be made into new paper or cardboard again to realize the best utilization of resources. 2.Compression:

The dry pulp is compressed into combustibles and sent to an incineration plant for energy**. 3.Composting Treatment:

The dry pulp is stacked together with its organic waste, and after a period of fermentation, it can be made into organic fertilizer for the planting of flowers and plants. 4.Other reuses:

Although dry pulp is not suitable as food packaging paper, it can be used as a material for other types of paper, such as architectural models, handmade cards, etc. We can treat it according to the specific situation and choose a suitable solution to deal with the dry pulp of waste paper.

Can you add, I don't quite understand it.

The dry pulp beaten by waste paper can usually be disposed of in the following ways:1**Utilization:

After mixing, decomposing, washing, bleaching and other treatments, the dry pulp can be made into new paper or cardboard again to realize the best utilization of resources. 2.Compression:

The dry pulp is compressed into combustibles and sent to an incineration plant for energy**. 3.Composting Treatment:

The dry pulp is stacked together with its organic waste, and after a period of fermentation, it can be made into organic fertilizer for the planting of flowers and plants. 4.Other reuses:

Although dry pulp is not suitable as food packaging paper, it can be used as a material for other types of paper, such as architectural models, handmade cards, etc. We can treat it according to the specific situation and choose a suitable solution to deal with the dry pulp of waste paper.

After the waste paper is held in the source of chaos, it is sorted and sorted, soaked in warm water, and re-beaten into paper slurry. The impurities in the pulp are divided into two categories, one is the impurities with a large proportion such as sand particles and small stones, which will form cavities and coarse particles on the surface of the segmented paper; The other type is plastic film, gum, dust particles and other impurities with light gravity, papermaking to be baked at high temperature, such impurities will melt and stick to the paper roller as soon as they encounter high temperature, so that the operation is interrupted. They should be screened and purified separately.

Bath pool for secondary fibers - pulp slag remover. Under the action of centrifugal force and gravity, the impurities with large specific gravity are thrown to the outside of the vortex and continuously discharged down along the container wall, while the pulp fiber with light specific gravity is discharged from another pipe diameter at the upper end of the container. In the lightweight slag remover, the pulp is injected from below, and under the action of centrifugal force and gravity, the secondary fibers with large specific gravity move outward and downward and are collected from the lower end, and the impurities with light gravity move upward near the center of the circle and are discharged from the upper end of the container.

After multi-stage and multi-stage reciprocating slag removal, the waste paper pulp finally washed away the dust and sand and returned to white. This technology increases the ratio of secondary fibers in the manufacture of high-grade paper from 20% to 80%. **One ton of municipal waste paper can make 750-800 kg of high-grade recycled paper.

The suspended solids of recycled papermaking wastewater have high chemical oxygen demand, and the chemical oxygen demand insoluble chemical oxygen demand and soluble chemical oxygen demand are composed of two parts, usually insoluble chemical oxygen demand (chemical oxygen demand (chemical oxygen demand (COD) accounts for the majority of the total, and when the suspended solids in the sewage are removed, most of the insoluble chemical oxygen demand is removed at the same time. Therefore, the main problems to be solved are the removal of stainless steel and chemical oxygen demand. The BOD5 value of waste paper is low, and the ratio of BOD5 to COD is generally .

and poor biochemical properties. The coagulation treatment method can only remove part of the BOD5, and most of the removal of BOD5 should be solved by biochemical methods.

The production of the paper industry is divided into two main stages, namely pulp and paper. Pulping is the separation of fibers from plant raw materials, pulping, and then bleaching; Papermaking is the process of dilution, molding, pressing, and drying pulp into paper. Both processes consume a large amount of water, most of which is discharged as wastewater.

Pulp and paper wastewater can be roughly divided into several parts: pulping and cooking liquid, washing wastewater, bleaching wastewater and paper machine white water. Alkaline pulping waste liquid, also known as "black liquor", is the main source of pollution in pulp mills. The wastewater of the paper industry has the characteristics of large wastewater discharge, high BOD, many fiber suspended solids in the wastewater, high divalent sulfur and color, and strong mercaptan odor.

The water pollutants generated in the process of pulp and paper making are mainly in cooking wastewater, bleaching wastewater, alkali black liquor evaporation sewage, cold bridge condensate, waste paper pulping washing and screening, deinking wastewater, high-yield pulping pretreatment, screening and purification, bleaching wastewater and papermaking white water. The main contaminants in these effluents are lost fibers, organic matter dissolved in raw materials, and explained products, papermaking chemicals added during treatment. Fiber deposits can block river channels, organic matter in the water can deplete dissolved oxygen, produce color and foam, and methanol, terpenes, mercaptans, and thioethers are toxic.

The organochlorides produced in the chlorine bleaching process are highly toxic, and dioxins have strong teratogenicity, mutagenicity and carcinogenic effects.

1 All (1) Compared with the widely used inorganic flocculant PAC, the microbial flocculants CBF and LBF have better treatment effects on papermaking wastewater. Papermaking wastewater is alkaline, and the treatment effect of microbial flocculant under alkaline conditions is ideal, so it is more suitable to use CBF and LBF to treat papermaking wastewater.

2) Microbial flocculant was used to treat papermaking wastewater and biochemical secondary treatment effluent, and the optimal treatment conditions for CBF were as follows: pH=12, CBF (2 g L) dosage of 80 ml L, and coagulant CaCl2 solution dosage of 1% mass fraction of 120 ml L; The optimal treatment conditions of LBF were as follows: pH=12, LBF dosage mL L, and coagulant CaCl2 solution dosage of 1% mass fraction 120 mL L, and the hydraulic conditions of both were rapid stirring (200 r min) for 40 s and slow stirring (80 r min) for 3 min.

The removal rates of SS, color and COD were respectively % in the papermaking wastewater treated with LBF, and the treatment effect was better than that of PAC.

3) LBF is a flocculant prepared from the dewatered sludge in the sewage treatment workshop of the paper mill, which is used for the treatment of papermaking wastewater, which realizes the resource utilization of waste and effectively reduces the treatment cost of papermaking wastewater.

This depends on what you need to deal with, on the one hand, decolorization, on the other hand, deodorization, the composition of paper mill wastewater is very complex, biodegradability is also very poor, it is a more difficult to treat industrial wastewater, in the process of papermaking, pulping, water treatment will not only produce a high degree of colored wastewater and will be doped with suspended solids, resulting in foul odor, so it is recommended to use decolorizing agent in decolorization, and then use deodorant, deodorization as a whole.