CN211111556U

CN211111556U - Zero discharge facility for treating waste water from wheat straw paper-making

Info

Publication number: CN211111556U
Application number: CN201822096970.2U
Authority: CN
Inventors: 高节义
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-12-06
Filing date: 2018-12-06
Publication date: 2020-07-28
Anticipated expiration: 2028-12-06

Abstract

A zero-discharge treatment facility for wheat straw papermaking wastewater comprises a papermaking workshop (1), a livestock and poultry farm (2), an anaerobic and aerobic integrated device (3), a paddy field (4) and a methane production device (22), and is characterized in that a wastewater discharge port of the papermaking workshop (1) is communicated with a first roller filter (5), a wastewater discharge port (11) of the first roller filter (5) is communicated with a water inlet of a second roller filter (24), a wastewater discharge port (11) of the second roller filter (24) is communicated with a wastewater inlet of the anaerobic and aerobic integrated device (3), a biogas slurry discharge port (13) of the anaerobic and aerobic integrated device (3) is communicated with the paddy field (4), an overflow port (15) of the paddy field (4) is communicated with a sedimentation tank (12), a water outlet of a submersible pump (20) in the sedimentation tank (12) is communicated with the livestock and poultry farm (2) and is also communicated with the papermaking workshop (1), and (4) recycling the papermaking wastewater to realize zero discharge.

Description

Zero discharge facility for treating waste water from wheat straw paper-making

Technical Field

The utility model relates to a sewage treatment plant, especially a zero release facility is handled to wheat straw papermaking waste water.

Background

At present, various sewage treatment technologies take resources in sewage as pollutants to be removed. In addition, the pollutants can not be completely removed, so that the pollutants continuously pollute the environment, the economic development is restricted, and a plurality of social conflicts are generated. Therefore, the research and design of a zero discharge facility for treating the wheat straw papermaking wastewater takes pollutants in the papermaking wastewater as resources, and the pollutants are completely utilized to produce new products and benefit people, which is the technical problem to be solved at present.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a zero discharge facility for papermaking wastewater treatment.

The technical proposal of the utility model for solving the technical problem is that:

the zero discharge facility for treating the wheat straw papermaking wastewater consists of a papermaking workshop, a livestock and poultry farm, an anaerobic and aerobic integrated device, a farmland and methane production equipment. Filtering the wastewater discharged from the papermaking workshop through a first roller filter, separating crude paper pulp from water in the papermaking wastewater, and feeding the crude paper pulp into the papermaking workshop for papermaking; and (3) feeding the wastewater into a second roller filter to separate fine paper pulp and silt from water, feeding the fine paper pulp and the silt into a solid waste treatment biogas digester, and feeding biogas generated by the biogas digester into a boiler for combustion. The biogas residue is applied to farmland. And the water filtered by the second roller filter is sent to an anaerobic and aerobic integrated device, and methane generated by the anaerobic and aerobic integrated device is sent to a boiler for combustion. The water discharged by the anaerobic and aerobic integrated device is biogas slurry which is sent into paddy fields to cultivate crops in the paddy fields, and the roots of the crops absorb pollutants, namely nutrients, in the wastewater, so that the aim of purifying the water quality is fulfilled. Meanwhile, the biogas slurry has comprehensive nutrition and high fertility; also has the function of inhibiting the activity of germ eggs. Therefore, the biogas slurry is fed into paddy fields, and crops in the paddy fields grow vigorously without causing disasters. During the growth of crops, no pesticide or chemical fertilizer, such as herbicide, is needed, and the produced agricultural products are organic agricultural products. The paddy field can also be used for culturing fish or other aquatic animals, and the aquatic animals eat organic matters, namely pollutants, so as to achieve the purpose of purifying water quality. The water overflowing from the paddy field flows into a sedimentation tank, a submersible pump is arranged at the upper part of the sedimentation tank, and the submersible pump sends a small part of clear water at the upper part of the sedimentation tank into a livestock and poultry housing to flush the livestock and poultry housing; most of clear water is sent back to the paper making workshop to wash the mesh, and the paper making wastewater is recycled and has zero discharge.

As a preferred scheme of the utility model, livestock and poultry manure water of the livestock and poultry farm (2) is sent into a third drum filter (17), the manure and the water are separated, the manure is sent into a solid waste methane tank, methane generated by the solid waste methane tank is sent into a boiler for combustion; the biogas residue is applied to farmland. The filtered water is sent into an anaerobic and aerobic integrated device, the water discharged by the anaerobic and aerobic integrated device is biogas slurry which is sent into a paddy field, the water in the paddy field overflows to a sedimentation tank, a submersible pump is arranged at the upper part of the sedimentation tank, and the submersible pump sends a small part of clear water at the upper part of the sedimentation tank into a livestock and poultry colony house to wash the livestock and poultry colony house; most of clear water is sent back to the paper making workshop to wash the mesh, and the paper making wastewater is recycled and has zero discharge.

As the utility model discloses an optimal scheme, the waste gas of paper mill boiler emission sends into the methane production equipment, generates the methane gas mixture, and the burning of paper mill boiler is sent into to the methane gas mixture, and paper mill boiler discharges waste gas, and waste gas sends into the methane production equipment and generates the methane gas mixture, paper mill boiler exhaust gas cyclic utilization zero release. The working principle of the methane production equipment is as follows: the methane production equipment consists of a flow dividing chamber, a cathode chamber, an anode chamber, a methane production chamber and a separation chamber. The waste gas and the methane bacteria that the boiler discharged are sludge water and are carried the split stream room respectively, and split stream room upper portion is equipped with a plurality of methane-producing rooms, and waste gas and sludge water rise and get into each methane-producing room respectively, and at this moment, open the power, the negative plate in the anode chamber and the cathode chamber in the cathode chamber begin work, and the negative plate produces hydrogen ion, and carbon dioxide and hydrogen ion in the waste gas meet with methane bacteria. The carbon dioxide and the hydrogen ions are synthesized into methane under the action of methane bacteria, and the methane, unreacted carbon dioxide and sludge water rise and enter a separation chamber from a methane generating chamber; also oxygen produced in the cathode compartment and hydrogen produced in the anode compartment rise into the separator compartment. Methane, carbon dioxide, hydrogen, and oxygen are collectively referred to as: and (4) methane mixed gas. The methane mixed gas has small specific gravity and naturally rises and is discharged from the top of the separation chamber; and the sludge water has high specific gravity and is discharged from the bottom of the separation chamber, so that the methane mixed gas is separated from the sludge water.

The papermaking wastewater treatment is combined with livestock and poultry breeding industry, and is carried out by using wheat straws containing more carbon and less nitrogen, and having imbalance carbon-nitrogen ratio and unfavorable anaerobic digestion technology treatment; and because the livestock and poultry manure contains more nitrogen, less carbon and maladjustable carbon-nitrogen ratio, the anaerobic digestion technology is not favorable for treatment. The two are combined to rationalize the carbon-nitrogen ratio, facilitate the treatment of anaerobic digestion technology, improve the gas production rate of the methane tank and improve the treatment effects of paper-making wastewater and livestock and poultry excrement water.

Compared with the prior art, the utility model can take the pollutants in the papermaking wastewater as resources, and can be completely utilized to produce new products, thereby benefiting people; and the second treatment of papermaking wastewater and livestock and poultry industry excrement water can realize recycling and zero discharge. And the boiler waste gas of the third paper mill is recycled and zero-emission. And fourthly, organic agricultural products and aquatic products can be produced. The fifth paddy field is a wetland, and the wetland can generate water ecological benefits and improve the environmental quality; the sixth paper mill can realize self-sufficiency of energy and even supply energy to society.

In a word, the paper mill continuously supplies waste water, the organic waste water is processed by the anaerobic and aerobic integrated device to generate biogas, and the biogas is supplied to the boiler of the paper mill for combustion. The biogas is more than one day a day, the waste gas that the paper mill boiler produced is more than one day a day, produce the methane gas mixture that methane device produced more than one day a day, when the paper mill boiler does not use the methane gas mixture, the methane gas mixture just can supply energy to the society. And the water ecological benefit of the paddy field. Therefore, the paper mill is changed from a large energy consumption household and a large pollution household into an energy supply household, the environmental quality is improved, and the highest level of harmonious and unified development of environment, economy and society is realized.

Drawings

Fig. 1 is a schematic diagram of the system of the present invention.

Detailed Description

As shown in the figure, 1, a zero discharge facility for treating wheat straw papermaking wastewater comprises a papermaking workshop 1, a livestock and poultry farm 2, an anaerobic and aerobic integrated device 3, a paddy field 4 and a methane production device 22, and is characterized in that a wastewater discharge port of the papermaking workshop 1 is communicated with a first roller filter 5, the first roller filter 5 is provided with a wastewater coarse pulp discharge port 6, the wastewater coarse pulp discharge port 6 is communicated with the papermaking workshop, the first roller filter 5 is also provided with a wastewater discharge port 11, the wastewater discharge port 11 is communicated with a water inlet of a second roller filter 24, the second roller filter 24 is provided with a fine pulp and silt discharge port 25, the fine pulp and silt discharge port 25 is communicated with a solid waste biogas pool 7, the solid waste 7 is provided with a biogas pool output port 8, the biogas output port 8 is communicated with an air inlet 10 of a boiler 9, the second roller filter 24 is also provided with a wastewater discharge port 11, the wastewater discharge port 11 is communicated, the anaerobic and aerobic integrated device 3 is provided with a biogas discharge port 14, the biogas discharge port 4 is communicated with an air inlet 10 of a boiler 9, the anaerobic and aerobic integrated device 3 is further provided with a biogas slurry discharge port 13, the biogas slurry discharge port 13 is communicated with a paddy field 4, the paddy field 4 is provided with an overflow port 15, the overflow port 15 is communicated with a sedimentation tank 12, the sedimentation tank 12 is provided with a submersible pump 20, a water outlet of the submersible pump 20 is communicated with a livestock and poultry farm 2, a water outlet of the submersible pump 20 is also communicated with a paper-making workshop 1, and zero discharge of paper.

The livestock and poultry excrement water discharge port 16 of the livestock and poultry farm 2 is communicated with a third roller filter 17, the third roller filter 17 is provided with an excrement residue discharge port 18, the excrement residue discharge port 18 is communicated with the solid waste biogas digester 7, the third roller filter 17 is also provided with an excrement water discharge port 19, the excrement water discharge port 19 is communicated with the anaerobic-aerobic integrated device 3, and the livestock and poultry excrement water is recycled and zero-discharged.

The waste gas discharge port 21 of the boiler 9 is communicated with the waste gas inlet 23 of the methane production equipment 22, the methane production equipment 22 is provided with a methane mixed gas discharge port 27, the methane mixed gas discharge port 27 is communicated with the gas inlet 10 of the boiler 9, and the waste gas is recycled and has zero emission.

The utility model discloses implement, the owner from the public bid of attracting in market, bid company, according to the utility model discloses description and description attached drawing and detailed implementation, from each subassembly of market shopping. According to the utility model discloses the product description of description, description attached drawing and detailed implementation and each subassembly is under construction, installs each subassembly. Debugging, commissioning, running, delivering and normally running. The operating principle, performance, installation, troubleshooting, and the like of each component are described in detail in each product specification.

Claims

1. A zero-discharge facility for treating wheat straw papermaking wastewater comprises a papermaking workshop (1), a livestock and poultry farm (2), an anaerobic and aerobic integrated device (3), a paddy field (4) and a methane production device (22), and is characterized in that a wastewater discharge port of the papermaking workshop (1) is communicated with a first roller filter (5), the first roller filter (5) is provided with a waste coarse paper pulp discharge port (6), the waste coarse paper pulp discharge port (6) is communicated with the papermaking workshop, the first roller filter (5) is also provided with a wastewater discharge port (11), the wastewater discharge port (11) is communicated with a water inlet of a second roller filter (24), the second roller filter (24) is provided with a fine paper pulp and silt discharge port (25), the fine paper pulp and silt discharge port (25) is communicated with a solid waste methane tank (7), the solid waste methane tank (7) is provided with a methane output port (8), and the methane output port (8) is communicated with an air inlet (10) of a boiler (9, the second roller filter (24) is further provided with a waste water discharge port (11), the waste water discharge port (11) is communicated with a waste water inlet of an anaerobic and aerobic integrated device (3), the anaerobic and aerobic integrated device (3) is provided with a biogas discharge port (14), the biogas discharge port (14) is communicated with an air inlet (10) of a boiler (9), the anaerobic and aerobic integrated device (3) is further provided with a biogas slurry discharge port (13), the biogas slurry discharge port (13) is communicated with a paddy field (4), the paddy field (4) is provided with an overflow port (15), the overflow port (15) is communicated with a sedimentation tank (12), the sedimentation tank (12) is provided with a submersible pump (20), a water outlet of the submersible pump (20) is communicated with a livestock and poultry farm (2), a water outlet of the submersible pump (20) is also communicated with a paper-making workshop (1.

2. The wheat straw papermaking wastewater treatment zero-emission facility as claimed in claim 1, characterized in that a livestock manure water discharge port (16) of the livestock and poultry farm (2) is communicated with a third roller filter (17), the third roller filter (17) is provided with a manure residue discharge port (18), the manure residue discharge port (18) is communicated with a solid waste biogas digester (7), the third roller filter (17) is further provided with a manure water discharge port (19), the manure water discharge port (19) is communicated with an anaerobic and aerobic integrated device (3), and livestock manure water is recycled for zero emission.

3. The wheat straw papermaking wastewater treatment zero-emission facility as claimed in claim 1, characterized in that the exhaust gas outlet (21) of the boiler (9) is communicated with the exhaust gas inlet (23) of the methane production equipment (22), the methane production equipment (22) is provided with a methane mixed gas outlet (27), the methane mixed gas outlet (27) is communicated with the air inlet (10) of the boiler (9), and the exhaust gas is recycled for zero emission.