Unlock instant, AI-driven research and patent intelligence for your innovation.

Treatment system and method of ethanol process wastewater, and application of system

A treatment method and technology for wastewater, applied in multi-stage water treatment, water/sewage treatment, natural water treatment, etc., can solve problems such as poor treatment effect and low treatment efficiency, reduce operating costs, improve denitrification efficiency, and improve Effect of Total Nitrogen Removal Rate

Pending Publication Date: 2021-06-11
GUOTOU BIO TECH INVESTMENT CO LTD
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a treatment system, method and application of ethanol process wastewater in order to overcome the problems of low treatment efficiency and poor treatment effect when the existing wastewater treatment process in the prior art is dealing with low-concentration suspended solids wastewater. The system and method can achieve higher treatment efficiency and better treatment effect when treating low-concentration suspended matter wastewater, so that the treated wastewater meets the drainage requirements

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Treatment system and method of ethanol process wastewater, and application of system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] This embodiment is used to illustrate the treatment system and method of the ethanol process wastewater of the present invention

[0088] (1) Treatment system for ethanol process wastewater

[0089] like figure 1As shown, the ethanol process wastewater is transported to the anaerobic treatment unit (comprising CSTR unit 1, solid-liquid separation device 2 and USAB unit 3) for anaerobic treatment to obtain the first wastewater and biogas; the first wastewater and part of the The ethanol process wastewater is delivered to the A / O unit 4 for the first anaerobic / aerobic treatment to obtain the second wastewater; the second wastewater is delivered to the A / O-MBR unit 5 containing the domesticated sludge, Perform a second anaerobic / aerobic treatment and obtain a third wastewater; recycle the acclimatized sludge in the A / O-MBR unit to the A / O4 unit, and recycle the acclimatized excess sludge to the anaerobic In the CSTR unit 1 of the treatment unit, the third wastewater is s...

Embodiment 2

[0103] This embodiment is used to illustrate the treatment system and method of the ethanol process wastewater of the present invention

[0104] (1) Treatment system for ethanol process wastewater

[0105] The treatment system was operated as described in Example 1, except that UASB was not included.

[0106] (2) Treatment method of ethanol process wastewater

[0107] The operation was carried out according to the method described in Example 1, except that the obtained first wastewater was not treated by UASB, but was directly transported to the A / O unit, and the subsequent process remained unchanged.

[0108] In this case, the concentration of TSS in the influent water of the A / O unit is relatively high, about 3500mg / L, so that the COD in the effluent water of the A / O unit is about 1000mg / L, and the ammonia nitrogen is about 80mg / L.

Embodiment 3

[0110] This embodiment is used to illustrate the treatment system and method of the ethanol process wastewater of the present invention

[0111] (1) Treatment system for ethanol process wastewater

[0112] The processing system described in Example 1 was followed.

[0113] (2) Treatment method of ethanol process wastewater

[0114] The operation was carried out according to the method described in Example 1, except that the ratio of the injection amount of the first wastewater to part of the ethanol process wastewater was such that the COD / TN value of the water entering the A / O unit was 6.

[0115] The amount of wastewater injected into the ethanol process is so small that when the COD / TN is 6, the effluent TN of the A / O unit is about 110mg / l, and the final effluent TN is about 75mg / l.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to the field of wastewater treatment, and discloses a treatment system and method for ethanol process wastewater, and application of the system. Domesticated aerobic sludge in an A / O-MBR unit is circulated to an anaerobic treatment unit, so that the sludge concentration in a CSTR is ensured, and the CSTR which is not suitable for treating the wastewater with the low suspended matter concentration realizes the effect of efficiently treating the wastewater with the low suspended matter concentration. Meanwhile, part of ethanol process wastewater is conveyed to an A / O unit to serve as a denitrification carbon source, so that the denitrification efficiency is improved, and the total nitrogen removal rate of the treated wastewater is also remarkably improved. Moreover, according to the scheme provided by the invention, stable operation of the anaerobic system can be ensured, the operation cost is reduced, and the effects of energy conservation, emission reduction, quality improvement and efficiency improvement are realized.

Description

technical field [0001] The invention relates to the field of wastewater treatment, in particular to a treatment system, method and application of ethanol process wastewater. Background technique [0002] As the energy crisis intensifies, as one of the future alternative fuels, the demand for ethanol is increasing. At present, starchy raw materials and cellulose raw materials are mostly used to produce ethanol, and a relatively mature wastewater treatment system has been developed. [0003] The starchy raw materials are sequentially crushed, pulped, liquefied and fermented to obtain fermented mash, and the fermented mash is distilled to obtain ethanol and waste mash, and the waste mash is subjected to solid-liquid separation to obtain waste mash clear liquid and waste mash wet cake , among which, the waste mash wet cake can be dried to obtain DDGS, while the waste mash clear liquid enters the wastewater treatment system for treatment, and finally obtains treated wastewater t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F103/36
CPCC02F3/302C02F1/722C02F2103/36C02F2301/08C02F2305/026
Inventor 宁杏芳邓润亚杜金宝于建东林海龙刘劲松熊强
Owner GUOTOU BIO TECH INVESTMENT CO LTD