Washing cloth grass sewage treatment equipment
The sewage treatment equipment of washing cloth grass can be buried under the surface of the ground, which can be used as green or square land. Therefore, the equipment has no surface area, does not need to build a house, and does not need heating and insulation.
· sq sewage treatment equipment is composed of two sets of equipment with steel structure, and domestic anti-corrosion coating is used for anti-corrosion. It has acid and alkali salt resistance, aging resistance, abrasion resistance and rust resistance. The anticorrosive life of the equipment can reach more than 12 years after the coating is applied.
The results show that the effect of secondary oxidation tank or mixed oxidation tank in series is better than that of AO type. Moreover, it is smaller than the activated sludge tank, and has strong applicability to water quality and good impact resistance At the same time, a new elastic three-dimensional material is used in the oxidation tank, which has large specific surface area, micro biofilm, and convenient membrane removal. Under the same organic load conditions, the removal rate of organic matter is higher than other fillers. It can dissolve nutrients in air in water 。
Due to the use of oxidation tank in Ao treatment process, the volume load of the filler is relatively low, and it is slightly in the self oxidation stage, so the sludge yield is less. In addition, the moisture content of sludge produced by oxidation tank is far lower than that of activated sludge tank.
Therefore, the amount of sludge produced by TWZ series sewage treatment equipment is less, and it only needs to be discharged once about 90 days.
The source of wastewater from the equipment of washing cloth grass wastewater is as follows:
With the continuous improvement of people's living standards, large-scale commercial laundry centers and bathing centers have sprung up in large numbers. The working process of the laundry center is basically similar. Generally, the first washing is done with cold water, mainly to remove the surface materials such as floating soil and dust, and the second time is hot The third and fourth times (some even the fifth time) are used for washing and dehydration. The whole washing process needs a lot of water.
Therefore, the washing wastewater contains surfactant, sodium tripolyphosphate, carboxymethyl cellulose, oil stain, dust particles and various microorganisms. The appearance is turbid. The COD is 300 ~ 800mg / L, pH is 6.5 ~ 7.5, and the content of suspended solids is high, generally 500 ~ 1200mg / L Phosphate will lead to eutrophication of water body, and surfactant will make water lively and plant poisoning and death. It can make some micro pollutants in water solubilized; the amount of washing waste water is large, there is a small amount of foam, which contains less suspended solids, and COD is also smaller and more transparent The water quality is slightly better than that of cleaning wastewater.
Characteristics of washing cloth grass sewage treatment equipment:
For the laundry center, the general space is relatively small, we have designed a small washing wastewater treatment equipment, covering a small area. In general, the amount of water in the laundry center is not large and the profit is not high. We adopt advanced and efficient biochemical technology to ensure that the standard is up to the standard and the investment is relatively low Low for other enterprises.
Principle of cloth washing wastewater treatment equipment:
The laundry wastewater is collected by the pipe network and enters into the sewage treatment system. Firstly, the fiber and large floating objects are intercepted by the grid, and the effluent flows into the regulating tank to balance the water quality and quantity of the wastewater; the effluent is lifted to the coagulation reaction tank by pump, and PAC is added to make the colloidal phase system of the wastewater After destabilization, PAM is added to make it flocculate and settle; the effluent flows into the sedimentation tank by gravity to separate the sludge and water; the effluent flows into the sump to collect the effluent from the sedimentation tank; the effluent is pumped to hy-bw integrated sewage treatment equipment, and the integrated sewage treatment equipment of hy-bw type is used for the integrated sewage treatment In the water treatment equipment, firstly, it passes through the hydrolysis acidification tank. Under the action of anaerobic bacteria, the macromolecular organic matter in the hydrolytic acidification tank is decomposed into small molecular organic matter, so as to improve the biodegradability of wastewater and reduce the operation load of subsequent aerobic treatment; the effluent flows into the first stage by gravity In the contact oxidation tank, aerobic microorganisms use organic pollutants in water as substrates for aerobic metabolism, so as to stabilize the organic matters with low energy level inorganic substances and achieve harmless process. After the organic substances are ingested, part of them are decomposed, stabilized and extracted for microorganisms For energy supply, part of it will synthesize new cellular material, namely biological sludge, which needs to be pumped and discharged regularly; the effluent will flow into the secondary contact oxidation tank to further reduce the organic matter in the wastewater; the effluent will flow into the sedimentation tank, after sedimentation treatment, the sludge and water will be separated; the effluent will be discharged to the standard Put it. The settled sludge is partially returned to the hy-bw integrated sewage treatment equipment by the sludge pump, and the excess sludge is pumped into the sludge drying tank by the sludge pump, which is regularly pumped and transported out for treatment.