A membrane photobioreactor for treating nitrogen and phosphorus that are out of limits in a biogas slurry and treating method thereof, relating to biogas slurry treatment. The membrane photobioreactor for treating nitrogen and phosphorus that are out of limits in a biogas slurry is provided with a biogas slurry storage tank, peristaltic pumps, a microalgae cultivating tank, an air pump, a membrane photobioreactor and a hollow fiber membrane. The biogas slurry containing nitrogen and phosphorus that are out of limits is stored in the biogas slurry storage tank, and is driven by a first peristaltic pump to circularly flow in a silicone pipe; a microalgae solution is cultivated under illumination in the microalgae cultivating tank, and is driven by a second peristaltic pump to circularly flow in a silicone pipe, air is fed into the microalgae cultivating tank through the air pump, the biogas slurry and the microalgae solution are converged in the membrane photobioreactor, and the biogas slurry circularly flows inside the hollow fiber membrane pipe and the microalgae solution circularly flows outside the hollow fiber membrane pipe, the two being in a cross flow; and the nitrogen and phosphorus that are out of limits in the biogas slurry penetrate from the inside of the hollow fiber membrane and are absorbed by the microalgae solution outside the membrane, and after cyclical cultivation, nitrogen and phosphorus that are out of limits in the biogas slurry are absorbed, and the discharge standards are achieved.

The present disclosure provides a water treatment module, a bioreactor comprising one or more of such modules and a receptive water treatment system. Also provided herein is a method making use of the above module, bioreactor and system. The water treatment module comprises (i) at least one elongated gas enclosure comprising a gas inlet and two vertical walls, at least one vertical wall comprising a water-impermeable and gas-permeable membrane having a water-facing side and a gas-facing side, the two vertical walls separating between water external to the enclosure and gas within the enclosure, the gas enclosure being in a rolled or folded configuration to thereby define a convoluted horizontal path and one or more water-treatment spaces formed between opposite water facing sides of the enclosure; and (ii) a diffuser arrangement comprising gas diffusers configured for introducing a stream of gas into the one or more water treatment spaces.

An overgrowth of worms can reduce the effluent quality of a membrane aerated biofilm reactor. A method of controlling the growth of worms in a membrane aerated biofilm includes discontinuing all oxygen sources to a tank containing the biofilm and fluid flows flow into the tank. The tank is maintained in this idle condition for a period of time sufficient to kill at least some of the worms living in the biofilm. The method may be applied periodically to inhibit the formation of an excessive population of worms or retroactively to reduce an already excessive population of worms.

The present disclosure relates to wastewater treatment systems for attracting and retaining anaerobic ammonia oxidizing (anammox) bacteria, methods of treating wastewater using such wastewater treatment systems, and the like.

The present disclosure provides a water treatment module, a bioreactor comprising one or more of such modules and a receptive water treatment system. Also provided herein is a method making use of the above module, bioreactor and system. The water treatment module comprises (i) at least one elongated gas enclosure comprising a gas inlet and two vertical walls, at least one vertical wall comprising a water-impermeable and gas-permeable membrane having a water-facing side and a gas-facing side, the two vertical walls separating between water external to said enclosure and gas within said enclosure, the gas enclosure being in a rolled or folded configuration to thereby define a convoluted horizontal path and one or more water-treatment spaces formed between opposite water facing sides of the enclosure; and (ii) a diffuser arrangement comprising gas diffusers configured for introducing a stream of gas into the one or more water treatment spaces.

A method for establishing a wastewater bioreactor environment including the step of introducing a modified polydimethylsilaxone fiber to a bioreactor tank of a membrane aerated bioreactor.

A membrane biofilm reactor including a vessel defining a volume is disclosed. The reactor also typically includes a first and second plurality of hollow fiber membranes. Each hollow fiber membrane generally has an outer surface and a lumen, and is located within the volume. The reactor further preferably includes a first and second gas feedstock. The first gas feedstock is provided through a first inlet in fluid communication with the lumens of the first plurality of hollow fiber membranes. The second gas feedstock is provided through a second inlet in fluid communication with the lumens of the second plurality hollow fiber membranes. Finally, the reactor also typically includes a biofilm formed on the outer surface of the hollow fiber membranes and made up of methanotrophs, Methanosarcina acetivorans, or both. The first gas feedstock is preferably different from the second gas feedstock.

The present invention provides a method and apparatus for controlling gas flow rate to the membrane of a membrane aerated biofilm reactor (MABR) in order to effect one or more process outcomes, in particular to reduce or minimize N.sub.2O emissions in the exhaust gas from the MABR while managing gas delivery to mixing apparatus of the MABR and maintaining NH.sub.4 and NO.sub.3 targets in the treated effluent, the method comprising monitoring one or more parameters of the wastewater and the exhaust gas and modulating the supply of feed gas to the membrane based on the one or more parameters in order to control the composition of the exhaust gas.

A liquid flow distribution system comprises a flow chamber and a rotor. The flow chamber has a flow chamber inlet, a flow chamber outlet and a chamber flow path extending from the flow chamber inlet to the flow chamber outlet. The flow chamber path is curved so as to generate a generally vortical flow in liquid passing through the chamber flow path. The rotor has a plurality of rotor blades rotatably mounted about a rotor axis. The rotor is mounted in proximity to the flow chamber outlet and positioned such that a flow of liquid exiting the flow chamber outlet impacts one or more of the rotor blades to rotationally drive the rotor. Rotational driving of the rotor in turn disperses liquid impacting the rotor blades.

There is described herein a consortium of micro-organisms comprising, consisting or consisting essentially of Rhizobium spp., Bacillus spp., and Pseudomonas spp.