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Wastewater treatment system and process

A wastewater treatment system and wastewater treatment technology, applied in the wastewater treatment system and its process field, can solve the problems of poor grease removal effect, incomplete removal of suspended particles, cumbersome process, etc., to achieve improved effect, low cost of wastewater treatment, and simple process Effect

Pending Publication Date: 2020-02-11
新晃县污水处理有限责任公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a waste water treatment system and its process, which solves the problems of poor oil removal effect, incomplete removal of suspended particles and cumbersome process in the existing food industry waste water treatment system

Method used

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  • Wastewater treatment system and process

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Embodiment 1

[0034] Such as Figure 1-2 As shown, the present invention provides a technical solution: a wastewater treatment system includes a grid 1, an oil-water separator 2, a regulating tank 3, a sedimentation tank 4, a filter press 5, an air flotation tank 6, a sewage separator 7 and a sewage micro filter machine 8.

Embodiment 2

[0036] A kind of wastewater treatment process comprises the following steps:

[0037] Step 1: Initial filtration of wastewater;

[0038] Step 2: Oil and water skimming;

[0039] Step 3: acid-base adjustment;

[0040] Step 4: Wastewater precipitation;

[0041] Step 5: removal of suspended particles;

[0042] Step 6: centrifugal separation;

[0043] Step 7: Filter.

[0044] Said step 1: preliminary filtration of waste water, the waste water is filtered by using a grid 1 with a pore size of 10-40 mesh, and coarser dispersed suspended solids are separated from the waste water to protect the water pump and subsequent treatment equipment.

[0045] Said step 2: skimming off oil and water, skimming the grease in the waste water through the oil-water separator 2 .

[0046] The step 3: acid-base adjustment, the water quality and water quantity of the wastewater are adjusted through the adjustment pool 3, and the adjustment time is generally 6-24 hours.

[0047] The step 4: wastew...

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Abstract

The invention relates to the technical field of wastewater treatment, in particular to a wastewater treatment system and a process thereof. According to the invention, grease in wastewater is skimmedoff through an oil-water separator, and the removal rate of the oil-water separator to floating grease can reach 90% or above. In the invention, a chemical coagulant or coagulant aid is added into a floatation tank to improve the removal rate of emulsified grease and colloidal suspended particles in the wastewater, and after 30min of floatation tank HRT, 90% of or more grease and 40%-80% of BOD5 and SS can be removed. The process adopted by the invention includes the steps of screening, skimming, adjustment, precipitation, air floatation, centrifugal separation, filtration and the like, the first five procedures are mostly used for pretreatment or primary treatment, the latter two procedures are mainly used for advanced treatment, thus effectively improving the wastewater treatment effect.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a wastewater treatment system and a process thereof. Background technique [0002] Due to the wide range of raw materials and various types of raw materials in food factories, the quality of wastewater produced varies greatly, and the amount of water is also large. The main pollutants in food wastewater include solid substances, grease, protein, starch, colloidal substances, acids, alkalis, salts, pathogenic bacteria, etc., which will cause eutrophication of water bodies, resulting in the death of water animals and fish, and will cause The organic matter deposited on the bottom of the water produces odor and pollutes the environment. [0003] The existing food industry wastewater treatment system has poor grease removal effect, incomplete removal of suspended particles, and cumbersome process. Contents of the invention [0004] (1) Solved technical problems [0...

Claims

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Application Information

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IPC IPC(8): C02F9/04
CPCC02F9/00C02F1/001C02F1/40C02F1/66C02F2001/007C02F2301/08C02F1/38C02F1/444C02F1/24C02F1/52
Inventor 杨仕勇甘文建王新友杨静龙国田刘莉娟
Owner 新晃县污水处理有限责任公司
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