| 摘要 |
<p>The wastewater treatment installation comprises a membrane reactor (1), two sequential biological reactors (A, B) working in alternating phase of aeration and settling/clarification, and a pretreatment tank (3) in which crude water inlet opens. The biological reactors and the pre-treatment tank are associated with the membrane reactor and a contacting unit. Valves are provided between the different reactors and tank for directing the crude water, after passing through the pre-treatment basin towards one of sequential biological reactors and/or the membrane reactor. The wastewater treatment installation comprises a membrane reactor (1), two sequential biological reactors (A, B) working in alternating phase of aeration and settling/clarification, and a pretreatment tank (3) in which crude water inlet opens. The biological reactors and the pre-treatment tank are associated with the membrane reactor and a contacting unit. Valves are provided between the different reactors and tank for directing the crude water, after passing through the pre-treatment basin towards one of sequential biological reactors and/or the membrane reactor, and allowing a continuous treatment of waste water by the sequential biological reactors and/or the membrane reactor. The pretreatment tank is an anoxic tank. The pretreatment tank and membrane bioreactor are arranged between two sequential biological reactors, and comprise a common wall with each of the two sequential biological reactors. The sequential biological reactors comprise evacuation siphon to work at constant level. A transfer chamber is arranged between a wall of the installation and a wall of the membrane reactor. The transfer chamber is contacted with the biological reactors by the valves. An intermediate chamber is between the membrane bioreactor and the pre-treatment tank through a pipe provided with a valve. The biological reactors are semi-circular, and the pre-treatment tank is between two diametric walls of an overall circular contour.</p> |
