Household sewage treatment system, domestic sewage treatment program

You can learn about domestic sewage biogas purification tanks. Personally, I think you're a good idea, and you have the idea of saving water. Sewage is used to flush toilets and must first be collected and stored.

If left untreated, it will stink, unhygienic, and cause disease. In rural areas, biogas digesters are built, and domestic sewage is directly fed into the digester, and the biogas slurry can be used to flush toilets after fermentation. It can be pumped up with a simple pumping device with a check valve and piston (similar to a manual pesticide sprayer) and does not consume electricity.

Fortunately in the countryside and suburbs, it can be collected in large quantities, and the household sewage in the city can only be collected and used with buckets and other utensils, and you have not heard of the method you are talking about!

Sewage mainly refers to domestic sewage, which is the wastewater discharged from residents' daily life, mainly in residential buildings and public buildings, such as residences, institutions, schools, hospitals, shops, public places and toilets of industrial enterprises. Most of the pollutants in domestic sewage are organic matter and a large number of pathogenic microorganisms.

Domestic sewage includes all kinds of washing water, sewage and feces in urban life, etc., mostly non-toxic inorganic salts, the composition is relatively fixed, mainly contains carbohydrates, proteins, amino acids, fats and other organic matter, at the same time, domestic sewage nitrogen, phosphorus and other plant nutrients content more, easy to cause eutrophication of water bodies, is one of the main sources of pollution of water bodies, so it is necessary to treat domestic sewage and make it up to the standard, before it can be discharged into rivers and lakes.

The MBR membrane integrated equipment has obvious effect on domestic sewage treatment, and the effluent COD, pH value, NH3-N and turbidity all meet the water quality standards of urban miscellaneous water. The treated effluent can be reused for urban greening, road cleaning, car washing, toilet flushing, etc. Compared with the traditional treatment system, the secondary sedimentation tank is omitted, 50% of the floor space is saved, and the nitrifying bacteria with small individuals and slow growth are effectively intercepted, and the requirements of miscellaneous water reuse are met under the premise of ensuring the quality and stability of the effluent quality.

The common domestic sewage treatment methods are mainly as follows:

1. The non-energy consumption buried small domestic sewage device is an improved septic tank, and the process flow is as follows: domestic sewage - anaerobic hydrolysis tank - anaerobic filter tank - oxidation ditch - effluent. The anaerobic hydrolysis tank is the national standard septic tank, the anaerobic filter tank is the anaerobic contact oxidation tank, with built-in filler, and the oxidation ditch is the use of drainage ditch and forced ventilation, and the process of dissolving oxygen in the air into the sewage is carried out naturally.

This domestic sewage treatment process is suitable for the domestic sewage of a single residential building, and can be used in combination with the national standard septic tank, and its big advantage is that the operating cost is zero.

2. Natural biological purification treatmentNatural biological purification treatment mainly uses the microbial action of the soil and the microorganisms in the plant roots or ponds to reduce the concentration of pollutants in the water. The main advantages are: low investment (in the case of land acquisition fee of 10,000 yuan), low operating cost, simple management, and less operators.

They can be used individually or in combination with each other to form a joint treatment system. The disadvantage is: large footprint.

The main domestic sewage treatment process is as follows: domestic sewage precipitation, monoxide pond (land treatment), rapid percolation (full velocity percolation, surface diffuse).

3. Artificial biological purificationArtificial biological purification is a method of artificially creating conditions for microorganisms to multiply in large quantities, artificially domesticating microorganisms, and using microbial matter metabolism to degrade organic matter in water. The main advantages are: the treatment effect is stable, the treatment efficiency can be adjusted within a certain range, and the process occupies a small area.

4. Biofilm natural purification processBiofilm natural purification is a biofilm transplantation technology, which is treated with itchy bacteria and facultative bacteria. It has the characteristics of low operating cost and almost no energy consumption, and is suitable for domestic sewage treatment in tourist areas and residential areas.

Too much sediment has a great impact on the pretreatment, biological treatment, subsequent disinfection, and desilting of urban sewage plants!

1. Pretreatment section: too much sediment and overload of pretreatment equipment, which is likely to cause equipment damage due to fatigue; The impeller at the lifting pump is easy to wear; It is easy to block the water inlet corridor of the equipment, resulting in the inability of the pretreatment equipment to operate.

2. Cass section of biological treatment: too much sediment, which seriously affects the survival state of sludge in the pool, first of all, it is difficult to basically form the bacterial colloid, and the aeration volume increases during aeration, the sedimentation time is also extended, the process is damaged, and the power consumption in operation increases.

3. Dewatering system: The chemical cationic PAM used in dehydration has a good coagulation effect on sludge (microorganisms in the cass pool), but the effect on sand and gravel is not very large, and it cannot be formed into mud cake during desilting, which is easy to damage the desilting equipment.

Personally, I think that the improvement method: firstly, a collection tank is set up before pretreatment, so that the water buffer reduces the sediment into the next procedure, and the sediment is cleaned up from time to time; In the pretreatment stage, while the equipment is operating normally, the sediment is cleaned regularly on the pretreated water corridor and the lifting pump room to minimize the sediment entering the CASS tank and affecting the survival state of activated sludge, etc.

Personally, I think that to solve the sediment problem in the early stage and avoid unnecessary loss in the future, it is best to solve the source, the source is unable to solve the way, and finally to the recipient!

Wuhan Huaxin Water Treatment is the most professional.

Chongqing Yunfan water treatment is the best.

Hello answer, happy to answer your questions. There are physical treatment, chemical treatment, biological treatment and biological contact oxidation. The physical treatment method is a way to solve the problem by using physical properties, through **, separation and other means.

Chemical treatment is a way to use the form of chemical reaction to solve the problem, through separation, dissolution, colloidal and other means to purify the organic matter in the sewage into harmless and stable substances. What are the methods of domestic sewage treatment Biological treatment method is to use the biochemical action of microorganisms to treat organic pollutants in wastewater. There are two main types of sewage, the first is industrial sewage, while the second is domestic sewage, which is collected through urban pipes to a designated place and treated centrally.

The pollutants contained in domestic sewage are mainly organic matter and a large number of pathogenic microorganisms, which can lead to the spread of infectious diseases, so domestic sewage must be treated before discharge.

See the five treatment methods of domestic sewage Domestic sewage is the sewage produced in human daily life, it is wide, the amount of organic matter that needs to be treated is more, usually mainly including kitchen wastewater, washing wastewater and excretion wastewater and other types, their treatment requirements are very high, after all, this is more suitable for secondary use of water in many types of industry wastewater. At present, water resources are scarce in many places, therefore, after some sewage treatment, a lot of water resources will be reused. Tool raw material microbial domestic sewage treatment special strain method step by step reading 1 5 biological contact oxidation method:

Wastewater is treated by biological contact oxidation, that is, the biological contact oxidation process is used to fill the filler in the biological reaction tank, and the oxygenated sewage is immersed in all the filler. 2 5 Chemical treatment method: wastewater treatment method that separates, removes dissolved, colloidal pollutants in wastewater or converts them into harmless substances through chemical reaction and mass transfer 3 5 Biological treatment method:

Through the metabolic action of microorganisms, the organic pollutants in the wastewater in the form of solutions, colloids and fine suspension are converted into stable and harmless substances. According to the different microorganisms, biological treatment can be divided into two types: aerobic biological treatment and anaerobic biological treatment. --Glycine sewage treatment strain degree 4 5 Wastewater biological treatment is widely used aerobic biological treatment method, according to tradition, aerobic biological treatment method is divided into two categories: activated sludge method and biofilm method.

The activated sludge method itself is a treatment unit, anaerobic biological treatment, also known as biological reduction treatment, which is mainly used to treat high-concentration organic wastewater and sludge. 5 5 Physical treatment method: the wastewater treatment method that separates the insoluble suspended pollutants (including oil film and oil beads) in the wastewater through physical action can be divided into gravity separation method, centrifugal separation method and sieve filtration interception method.

Chemically enhanced biological phosphorus removal wastewater treatment process.

In the process of sewage treatment, China's main rivers and lakes are seriously eutrophicated due to phosphorus pollution, and the State Environmental Protection Bureau has formulated relatively strict standards for phosphorus discharge in order to control phosphorus pollution. The chemically enhanced biological phosphorus removal sewage treatment process is mainly to remove organic pollutants and various forms of phosphorus in the sewage, this sewage treatment process integrates chemical phosphorus removal and biological phosphorus removal, and produces volatile organic acids through the activated sludge in the anaerobic digestion biological system, which is used as the substrate or nutrient for the growth of polyphosphate bacteria, so that the polyphosphate bacteria can selectively proliferate in the activated sludge and return them to the biological system, so that the biological sewage treatment system works in a state of efficient phosphorus removal; At the same time, the phosphorus produced by the sludge under anaerobic conditions is released and eliminated by chemical phosphorus removal. This is an efficient municipal sewage treatment technology, which meets the requirements of further phosphorus removal on the basis of conventional secondary sewage treatment in order to solve the eutrophication of water bodies in China at this stage.

This section of the cycle intermittent aeration sewage treatment process.

China's economic development level varies greatly, and the city with lagging economic development can not come up with a lot of funds for sewage treatment, therefore, how to use limited funds to reduce environmental pollution is a problem faced by many cities. In terms of sewage treatment, until recently, some cities still adopted primary or primary enhanced treatment technology, and the effluent did not meet the requirements of the national secondary discharge standard for the removal of organic pollutants. The cyclic intermittent aeration process gives full play to the advantages of high load oxidation ditch treatment efficiency, and makes full use of the good effluent characteristics of the sequential batch activated sludge sewage treatment process to ensure that the effluent of the system meets the requirements of the national first-class sewage discharge standard in the removal of organic pollutants.

In terms of investment and operation costs, it is about 30 lower than the secondary biological sewage treatment system that usually removes organic pollutants, and is a process technology suitable for the current sewage treatment requirements in China.

This section rotates the contact oxidation wastewater treatment process.

Rotary contact oxidation wastewater treatment technology is a new generation of aerobic biofilm treatment technology developed on the basis of biological carousel technology and combined with the advantages of biological contact oxidation technology. Rotary contact oxidation wastewater treatment process technology and complete sets of equipment provide a simple and reliable method of wastewater treatment. The shaft in the entire sewage treatment system is the only rotating part, and if the machine fails, the general mechanic can carry out repairs.

The system biomass is automatically compensated for changes in organic load. The microorganisms attached to the turntable are alive, and when the organic matter in the sewage increases, the microorganisms increase, and conversely, when the organic matter in the sewage decreases, the microorganisms decrease. Therefore, the working effect of the sewage treatment system is not susceptible to sudden changes in flow and load and power outages.

The operating costs are low, with only one-eighth to one-third of the electricity consumed by other aeration wastewater treatment systems. The footprint is only half of that of conventional activated sludge methods. Due to the wide variety of microorganisms growing in the biological system, it can efficiently treat all kinds of refractory industrial wastewater.

You can buy a copy of "Must Read for Sewage Workers" This book is quite detailed!

The Water Treatment Engineer's Handbook, which is a very useful resource.

Go to the Water World Forum and there are a lot of great gods that will help you.