What kind of medicine is added to the sludge dewatering machine, and the coagulant costs a ton more.

A variety of chemicals can be used for sludge deep dewatering, and the following are the most common chemicals used for ordinary sludge dewatering:

Cationic polyacrylamide: This is a polymer flocculant, which can flocculate small particles in sludge into larger particles through adsorption and bridging, and improve the sedimentation performance and dewatering performance of sludge.

Polyaluminum chloride: This is an inorganic polymer coagulant, which can coagulate with impurities in the sludge to form an insoluble precipitate, so that the water in the sludge is separated.

Lime: Lime can neutralize with the acids in the sludge, adjust the pH value of the sludge, and promote the cohesion and settlement of the sludge.

Diatomaceous earth: Diatomaceous earth has the characteristics of porosity and high specific surface area, which can be used as a filter aid to improve the filtration performance and dewatering performance of sludge.

It should be noted that different kinds of agents are suitable for different sludge properties and treatment requirements, so it is necessary to choose the appropriate agent according to the specific situation in practical applications. For sludge with high organic matter, under the condition that lime is not allowed to be added in the process, it is necessary to customize the organic deep sludge dewatering agent, and adjust the corresponding process parameters to ensure the sludge treatment effect.

Belt sludge dewatering plus flocculant PAM, plate and frame generally add PAC+PAM; PAC is about 2-3,000 yuan a ton, and PAM is about 2-30,000 yuan a ton.

The sludge dewatering machine needs to add flocculant or polyacrylamide.

Generally, sludge press filtration is after the physicochemical reaction, the coagulant (polyiron, polyaluminum...... is used) mainly forms pollutants into fine particles, and flocculants (PAMs) mainly aggregate fine particles into macromolecular flocs. So as to precipitate and then press the filtration.

If you are comfortable with the test, you will know that the direct addition of PAM to the sewage can also be used for filtration pressing, but the filter press effect is poor.

Therefore, when the dehydrator is operating, the flocculant plays a greater role.

Generally, flocculants and concentrates should be added.

The water pressed out by the stacking screw machine is returned to the regulating tank, so that the water of the regulating tank and the water of the post-biochemical tank have floating mud How to solve the waste water of the chicken and duck factory.

Increase the amount of copy increase generally included.

The BAI water rate will always decrease.

I don't know what you guys are using.

Zhi centrifuge or belt machine dao

Take the belt machine as an example, the centrifuge that will always be good to control the addition of more chemicals without blocking the filter cloth is similar, if your medicine has not been adjusted, it can only be the machine or the water inlet has changed (including solids and sludge intake) What model of the agent is used? 8160？ 8140？

There are many factors for high moisture content, such as equipment, belt tension, etc.;

Is the selection of the right agent? Is it a mismatch in product selection? Is Ciba in its original packaging?

If the moisture content is high, find a pharmacy supplier to debug, and if you can't adjust it, change the supplier, so esay!

Add 200g to purify.

Medicament. One ton of sewage in the sewage treatment plant should be added with 200g of purification agent. At present, the purification agent used in sewage treatment plants is generally polyacrylamide.

Its agent is the earliest developed organic polymer flocculant, which is widely used in industrial water treatment and sewage treatment due to its good flocculation and coagulation effect. Solid PAM can be dissolved in water in any proportion, and the aqueous solution is a uniform and transparent liquid. The size of the molecular weight has little effect on the solubility, but when the concentration of the solution is higher than 10%, it can show a gel-like structure due to the bonding of intermolecular hydrogen atoms.

Solid powder products must be prepared into an aqueous solution before use, in order to prevent the powder from clumping in the dissolution process "fisheye" phenomenon, you can add half of the warm water (no more than 60) in the dissolving tank, add the powder slowly under stirring, and then make up the remaining water, stir until completely dissolved. The concentration of aqueous solution is generally, and the solution can also be prepared first, and then diluted when used, the storage time of the solution should not exceed 5 days, as far as possible to prepare and use now, and the multi-point continuous dosing method is used when adding the solution to give full play to the flocculation effect of the product.

There are many types of flocculants and coagulants, such as: PAC, PAM, ferrous sulfate, ferrous chloride, alum, polydimethyldiallyl ammonium chloride, magnesium sulfate, aluminum sulfate and so on. The specific determination of what to use depends on the use effect, cost, and whether there is any new pollution in the whole treatment process.

Sludge dewatering agent, the main component is similar to flocculant coagulant, and there are many options according to the characteristics of the sludge.

Polyacrylamide is generally added to sludge treatment.

Sodium hypochlorite disinfectant required for one ton of sewage

Take, for example, a factory

On September 1, a sewage plant treated 148775 tons of water, and the advanced treatment part consumed 12,199kg of coagulant PAC (iron salt), 125kg of coagulant (PAM), and 3,720kg of sodium hypochlorite in the disinfection workshop. The consumption of individual drugs can be calculated:

Disinfectant sodium hypochlorite:

3720 148775 0 025kg tons 250kg tons.

Coagulant pac:

12199 148775 0 082kg tons 820kg tons.

Coagulant PAM:

125 148775 0 00084kg tons 8 4kg tons.

In addition to the cost control of electricity consumption in sewage plants, there is also an important cost expenditure that is drug consumption. The effluent water quality of the sewage plant is the national standard of Class A and most sewage plants cannot meet the standard of Class A for biological treatment only by activated sludge method, so the general sewage plant will use PAC or other auxiliary treatment agents, such as disinfectants, carbon sources, etc.

In the sludge workshop, PAM will also be used for sludge flocculation, so that it is more convenient for the sludge dewatering machine to remove the sludge with a moisture content of more than 99 to 80 or 60, so as to meet the requirements of external transportation and disposal. The cost of these chemicals added in order to make the sewage plant treatment meet the standard is also an important part of the cost of the sewage plant in daily operation, so as a manager, the cost of the chemicals should also be calculated statistically.

The calculation of the cost of the drug, the more convenient way is to use the unit consumption method of tons of water, the calculation method is relatively simple, the daily consumption of various drugs, and the amount of water treated is divided to obtain the unit consumption of drugs.

Generally, 1,000 tons of sewage, add 100 kg of 10% sodium hypochlorite The actual situation should be determined according to the sewage fecal coliform flora.

Belt sludge dewatering machine is filter press dewatering, and the requirement for flocculant is that the flocculant should be large and uniform, so that it is easy to squeeze.

The centrifugal sludge dewatering machine uses centrifugal force to dewater, and the requirements for the flocculant are small flocs, strong compactness, and not easy to break, which is conducive to solid-liquid separation and dehydration.

The screw sludge dewatering machine relies on screw pressing for dewatering, and the requirements for flocculant are not large, mainly to see the solid content of the sludge, if the water content is too high, it cannot be extruded.

I am engaged in the sales of centrifugal sludge dewatering machines, and we can communicate with each other.

The belt group is of moderate size, not too big and too sticky (it will block the filter belt).

CentrifugationGenerally speaking, flocculation is important, and we have professional pam flocculants.

Screwed sludge, I haven't been exposed to it much, I don't know. However, the processing capacity is relatively small, and (it seems that the machine is characterized by power saving) is drier than the belt type.

There are several ways to express the amount of coagulant, but you can choose any one. The first is expressed by the quality of the finished coagulant, that is, how much quality of the finished coagulant is added to each unit volume of water; The second is expressed in terms of the active ingredient of the coagulant, such as aluminum salts can be expressed by aluminum or alumina, that is, how much aluminum or alumina is added to each unit volume of water.

Aluminum sulfate - 50 100mg l, that is, 25L (50 pounds) of barrels, plus per barrel;

Alum - 100 150mg l, that is, 25L (50 pounds) of barrels, plus per barrel;

Basic aluminum chloride - 30 60mg l, that is, 25L (50 pounds) of barrels, plus per barrel.

The above is the dosage of general turbidity, the more turbid the water, the greater the dosage of coagulant. ）

1. The material settlement speed is slow.

2. The material particles are quite fine.

3. The moisture content of the material is more than 90%.

You can refer to Jinhua Shenzhou sludge dewatering machine.